<html> <head> <title>JS限制Textarea文本域字符個數</title> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <SCRIPT LANGUAGE="JavaScript"> <!--// function textCounter(field, countfield, maxlimit) { // 函數,3個參數,表單名字,表單域元素名,限制字符; if (field.value.length > maxlimit) //如果元素區字符數大於最大字符數,按照最大字符數截斷; fieldfield.value = field.value.substring(0, maxlimit); else //在記數區文本框內顯示剩余的字符數; countfield.value = maxlimit - field.value.length; } --> </SCRIPT> </head> <body> <form name=myform action=""> <textarea name="message" cols="28" rows="5" onKeyDown="textCounter(message,remLen,6);" onKeyUp= "textCounter(message,remLen,6);"></textarea> 您還可以輸入:<input name="remLen" type="text" value="6" size="5" readonly="readonly">個字符 </form> </body> </html>